Hikvision consults our unit ZJ-4 quasi-static D33 tester and YDZK-03 piezo resistance analyzer
Recently, Hikvision consulted our unit ZJ-4 quasi-static D33 tester and YDZK-03 piezoelectrical impedance analyzer, our piezoelectrical impedance analyzer range can reach 10MHz, 30MHz, 50MHz, to meet the needs of many aspects. The software is powerful.
The main parameters of piezoelectric devices include: resonant frequency fs, anti-resonant frequency fp, half-power points f1 and f2, maximum admittance gmax, electrostatic capacitance C0, dynamic reactance R1, dynamic capacitance C1, dynamic inductance L1, free capacitance CT, free permittivity, mechanical quality factor QM, electromechanical coupling coefficient keff, kp, k31, k33, etc., and can draw five characteristic curves of piezoelectric devices (admittance characteristic diagram, impedance characteristic diagram, admittance polar diagram, impedance polar diagram, logarithmic graph). Resonant frequency fs: The resonant frequency of the series branch in the equivalent circuit of the piezoelectric oscillator, at which the impedance of the piezoelectric oscillator is minimal. Anti-resonant frequency fp: The resonant frequency of the parallel branch of the piezoelectric oscillator, at which the impedance of the piezoelectric oscillator zmax is the largest. Half power points f1 and f2: From the admittance circle, the real part of the admittance is equal to the frequency at gmax 2, and there are two such frequencies, f2 for those greater than fs and f1 for those less than fs. Maximum conductance gmax: The real part of the admittance value at the resonance of the piezoelectric oscillator, that is, the real part of the admittance at "fs". Free capacitance CT: The capacitance value of a piezoelectric device at a frequency of 1kHz. This value is consistent with the value measured by the digital bridge. Subtracting the dynamic capacitance C1 from this value yields the true capacitance C0, which is balanced by the inductance C0. In the circuit design of ultrasonic power supply, the correct balance of C0 can improve the power factor of the power supply. zj-4Piezoelectric tester (static piezoelectric coefficient D33 measuring instrument), thin film PVDF piezoelectric coefficient tester
Keywords: piezoelectric, ceramic materials, polymer, d33 d15, 15 round pipe fixture
1. Product introduction:
zj-4Piezoelectric tester (static piezoelectric coefficient D33 measuring instrument) is a special instrument designed for measuring the D33 constant of piezoelectric materials, which can be used to measure piezoelectric ceramics with large piezoelectric constants, piezoelectric single crystals and piezoelectric polymer materials with small piezoelectric constants, and PVDF thin film pressure samples. ZJ-4 expands the D31 block, D31 film stretch fixture, D15 strip fixture, D15 round pipe fixture, this instrument is engaged in the production, application and research of piezoelectric materials and piezoelectric components.
2. Reference standards:
gb3389.4-82 "Static Test of Longitudinal Piezoelectric Strain Constant D33 for Performance Test Methods of Piezoelectric Ceramic Materials".
gb/t3389.5-1995"Performance Test Method for Piezoelectric Ceramic Materials - Expansion and Contraction Vibration Mode of Disc Thickness".
gb000?tj1.1/t3389.4-1982"Performance Test Method of Piezoelectric Ceramic Materials - Expansion and Contraction Vibration Mode of Longitudinal Length of Cylinder".
gb/t 3389.7-1986"Test Method for Performance of Piezoelectric Ceramic Materials Test for Strong Field Dielectric Properties".
gb/t3389.8-1986"Piezoelectric ceramic material performance test method pyroelectric coefficient test
Third, the main functions of the product:
Measure the d33 constant of piezoelectric materials
Measurement of piezoelectric ceramics with a large piezoelectric constant
Measurement of piezoelectric single crystals and piezoelectric polymer materials with small piezoelectric constants
Measure the equivalent piezoelectric d'33 constant of arbitrarily oriented piezoelectric single crystals and some piezoelectric devices
Thin film PVDF piezoelectric coefficient D33 test
d31Block, D31 film stretching fixture, D15 strip fixture, D15 round pipe fixture four sets of fixtures
Fourth, the main technical indicators
d33Measuring range:
1st gear: 20 to 6000pc n
×0.1st gear: 2 to 400pc n.
It can be used with PZT-JH10 4 8 12 piezoelectric polarization device
Yeszj-d33-yp15Piezo voltage tablet machine use.
Error: 1st gear: 2% 1 digit when d33 is in 100 to 4000pc n;
Measurement and calibration standard size: 18mm*08mm, aging time: 2-3 years (one of the important bases for judging the accurate performance of piezoelectric tester).
Piezoelectric film standard sheet: 20*20mm
Voltage Protection: Unique discharge protection function
d31Block, D31 film stretch fixture, D15 strip fixture, D15 round pipe fixture
5% 1 digit, when d33 is in 10 to 200pcn;
0.1st gear: 2% 1 digit, (when d33 is in 10 to 200pc n).
5% 1 digit when d33 is in 10 to 20pc n.
Resolution: 1 stop: 1 pc n; ×0.1st gear: 01 pc/n。
Size: Force applicator: 110 140mm; Instrument body: 240 200 80mm.
Weight: Force applicator: about 4 kg;
Instrument body: 2 kg.
Power supply: 220 volts, 50 Hz, 20 watts.